/*
 * This file contains code from "C++ Primer, Fourth Edition", by Stanley B.
 * Lippman, Jose Lajoie, and Barbara E. Moo, and is covered under the
 * copyright and warranty notices given in that book:
 *
 * "Copyright (c) 2005 by Objectwrite, Inc., Jose Lajoie, and Barbara E. Moo."
 *
 *
 * "The authors and publisher have taken care in the preparation of this book,
 * but make no expressed or implied warranty of any kind and assume no
 * responsibility for errors or omissions. No liability is assumed for
 * incidental or consequential damages in connection with or arising out of the
 * use of the information or programs contained herein."
 *
 * Permission is granted for this code to be used for educational purposes in
 * association with the book, given proper citation if and when posted or
 * reproduced.Any commercial use of this code requires the explicit written
 * permission of the publisher, Addison-Wesley Professional, a division of
 * Pearson Education, Inc. Send your request for permission, stating clearly
 * what code you would like to use, and in what specific way, to the following
 * address:
 *
 *  Pearson Education, Inc.
 *  Rights and Contracts Department
 *  75 Arlington Street, Suite 300
 *  Boston, MA 02216
 *  Fax: (617) 848-7047
*/

#include <cmath>
#include <cstddef>
#include <cstdlib>
#include <string>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <utility>
#include <iostream>
#include <fstream>
#include <sstream>
#include <algorithm>
#include <numeric>
#include <iterator>
#include <iomanip>

using std::sqrt;
using std::getline;
using std::vector;
using std::list;
using std::map;
using std::set;
using std::pair;
using std::string;
using std::istream;
using std::ostream;
using std::ifstream;
using std::ofstream;
using std::fstream;
using std::istringstream;
using std::ostringstream;
using std::stringstream;
using std::cin;
using std::cout;
using std::endl;
using std::cerr;
using std::istream_iterator;
using std::ostream_iterator;
using std::find;
using std::sort;
using std::for_each;
using std::count;
using std::count_if;
using std::copy;
using std::back_inserter;
using std::reverse_iterator;
using std::ios_base;
using std::boolalpha;
using std::noboolalpha;
using std::oct;
using std::dec;
using std::hex;
using std::showbase;
using std::noshowbase;
using std::uppercase;
using std::nouppercase;
using std::setprecision;
using std::showpoint;
using std::noshowpoint;
using std::scientific;
using std::fixed;
using std::skipws;
using std::noskipws;
using std::flush;
using std::ends;
using std::unitbuf;
using std::nounitbuf;
using std::setw;
using std::right;
using std::left;
using std::internal;
using std::setfill;

ifstream& open_file(ifstream&, const string&);
